This section is from the book "The Boy Mechanic Vol. 2 1000 Things for Boys to Do", by Popular Mechanics Co.. Also available from Amazon: The Boy Mechanic, Vol2: 1000 Things for Boys to Do.
Finding that I needed some wing nuts and not being able to purchase them in the size I wanted, I made them from the ordinary nuts. A hole was drilled through opposite corners of each nut and a staple made of wire riveted in the holes as shown in the sketch. The staple should be long enough to admit the end of the bolt. - Contributed by Clarence L. Orcutt, Buffalo, N. Y.